Respuesta:
. Mary and her sister are good students.
* I am * is * are
B. __IS______ Jhon your best friend?
* I am * is * are
C. Lucas __is__ at home.
* no * no * is not
D. She ___ is not in her bedroom.
* no * no * is not
me. ___Is____ Mr. Sánchez your new doctor?
* They are * It * I am
Explicación: